#!/bin/bash
#
# This is an example of using HGEDITOR to create of diff to review the
# changes while commiting.
EDITOR='/cygdrive/c/vim/vim73/gvim.exe -f' 
PROJ_ROOT=$(cygpath -w ${PWD})
TMPDIR=${TEMP}

HGTMP=""
cleanup_exit() {
    rm -rf "$HGTMP"
}

# Remove temporary files even if we get interrupted
trap "cleanup_exit" 0 # normal exit
trap "exit 255" HUP INT QUIT ABRT TERM

HGTMP=$(mktemp -d ${TMPDIR-/tmp}/hgeditor.XXXXXX)
[ x$HGTMP != x -a -d $HGTMP ] || {
  echo "Could not create temporary directory! Exiting." 1>&2
  exit 1
}

(
    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
        `cygpath -u "$HG"` diff "$changed" >> "$HGTMP/changes.diff"
    done
)

cat "$1" > "$HGTMP/msg.hg"

MD5=$(which md5sum 2>/dev/null) || \
    MD5=$(which md5 2>/dev/null)
[ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg.hg"`
if [ -s "$HGTMP/changes.diff" ]; then
    $EDITOR -c "cd ${PROJ_ROOT}" -c "let g:TagHighlightSettings['IgnoreFileScope'] = 1" -c vertical\ pedit\ `cygpath -w "$HGTMP/changes.diff"` `cygpath -w "$HGTMP/msg.hg"` || exit $?
else
    $EDITOR -c "cd ${PROJ_ROOT}" -c "let g:TagHighlightSettings['IgnoreFileScope'] = 1"  `cygpath -w "$HGTMP/msg.hg"` || exit $?
fi
[ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)

mv "$HGTMP/msg.hg" "$1"

exit $?
